PROBLEM TO BE SOLVED: To suppress movement of a breast to a chest wall side by movement of a holding member.SOLUTION: A subject information acquisition device includes holding means which contains a set of holding members and pinches and holds a subject which is a part of an examinee and is inserted between the holding members, a sheet-like member which envelopes at least a part of a region close to the examinee, in the subject, fixing means for fixing the sheet-like member to the holding means, a light source, a probe which receives acoustic waves generated when the subject is irradiated with light from the light source, and signal processing means which calculates characteristic information inside the subject by using the acoustic waves which the probe receives.COPYRIGHT: (C)2015,JPO&INPIT【課題】保持部材の移動による乳房の胸壁側への移動を抑制する。【解決手段】一組の保持部材を含み、保持部材の間に挿入された被検者の一部である被検体を挟んで保持する保持手段と、被検体のうち、少なくとも、被検者寄りの一部の領域を包み込むシート状部材と、シート状部材を保持手段に固定する固定手段と、光源と、光源から被検体に光が照射されることにより発生する音響波を受信する探触子と、探触子が受信した音響波を用いて被検体内部の特性情報を算出する信号処理手段を有する被検体情報取得装置を用いる。【選択図】図1
